Control Signaling for Fast Beam Handover Measurement Reporting

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Solution Overview

Problem

In dense cell scenarios, inter-cell handovers in high-frequency beam-based communication systems experience significant delays due to the lengthy reporting of mobility measurement results via RRC signaling, affecting the performance of mobile communication systems.

Innovation Solution

Implement methods for receiving and sending control signaling that include measurement reference signals with parameters such as PCI and CSI-RS, allowing for mobility measurements to be reported through physical layer signaling, reducing delay and improving handover speed.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If mobility measurement results are reported via RRC signaling, then measurement accuracy is ensured, but handover delay increases significantly

Engineering Contradiction:

Improvemobility measurement accuracyVSAvoidhandover delay

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent segments the measurement reporting process into two parts: periodic measurement results are pre-collected and stored, while only the triggering event and final decision need to be signaled. This allows the network to have measurement data ready without requiring continuous RRC signaling exchanges, reducing handover delay while maintaining measurement accuracy.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network performs measurement configuration and collects measurement results in advance through RRC signaling before handover is actually needed. When handover becomes necessary, the pre-collected measurement data is already available, eliminating the need for real-time measurement reporting and reducing handover delay.

Inventive Principle:

Principle #10Preliminary action

2Loss of information

If RRC signaling is used for mobility measurement reporting, then comprehensive measurement information can be transmitted, but signaling overhead and processing delay increase

Engineering Contradiction:

Improvemeasurement information completenessVSAvoidsignaling processing complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The patent extracts the measurement data collection function from the RRC signaling path and places it in the physical layer through CSI-RS resources. Only essential handover triggering information needs to be transmitted via RRC signaling, while detailed measurement data is handled through more efficient physical layer signaling, reducing overall signaling overhead and processing complexity.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent makes CSI-RS resources serve multiple functions: they are used for both channel state information measurement and mobility measurement reporting. This multi-functionality eliminates the need for separate dedicated measurement resources and simplifies the signaling structure, reducing device complexity while maintaining complete measurement information transmission.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If traditional RRC-based mobility reporting is used, then protocol compatibility is maintained, but handover speed is too slow for dense cell scenarios

Engineering Contradiction:

Improveprotocol compatibilityVSAvoidhandover speed

Core Design Contradiction:

Adaptability or versatilityVSSpeed

Solution Approach 1:

The patent adds a new dimension to measurement reporting by introducing physical layer signaling (CSI-RS based) alongside the traditional RRC signaling path. This allows measurement data to be transmitted through multiple channels simultaneously, with the physical layer providing fast path for dense cell scenarios while RRC signaling maintains protocol compatibility for other scenarios.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12490156B2Method for receiving and sending control signaling, and communication node

Publication Date: 2025.12.02 ZTE CORP

AI summary

Provided are methods for receiving and sending a control signaling, and a communication node. The method for receiving a control signaling includes: receiving first control signaling, where the first control signaling includes a first-type parameter that corresponds to a measurement reference signal, the first-type parameter includes a physical cell identifier (PCI) or includes a PCI and a second-type parameter, and the measurement reference signal includes one of the following: a measurement reference signal in a report configuration of channel state information (CSI), a measurement reference signal with a measurement result included in uplink control information (UCI), a measurement reference signal in a measurement reference signal resource set configured in a serving cell, or, a measurement reference signal in a beam failure candidate reference signal resource set.